Synthesis, thermal stability and surface activity of imidazolium monomeric surfactants

Sharma, Vinit; Bhatia, Chetna; Singh, Manpreet; Singh, Chitra; Upadhyaya, S. K.; Kishore, Kamal

doi:10.1016/j.molliq.2020.113006

Cited by 23 publications

(9 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The comparison of properties of gemini surfactants [C n Im-3OH-ImC n ]Br 2 with those of monomeric imidazolium surfactants reported earlier in literature (Kamboj et al, 2013;Sharma et al, 2020) confirmed the properties of former to be superior to those of the latter. In the determination of different properties of gemini surfactants, the role of pH has not been considered as it does not have any appreciable effect on the properties measured (Bhadani and Singh, 2011;Wang et al, 2014).…”

Section: Surface and Interfacial Studiessupporting

confidence: 75%

Surface, Micellar, and Aggregation Behavior of Non‐cytotoxic Imidazolium Gemini Surfactants

Shaheen

Mir

Arif

et al. 2020

J Surfact & Detergents

View full text Add to dashboard Cite

The micellar, surface, and aggregation properties of biocompatible, imidazolium-based hydroxyl group-Br 2 , were studied. The surface parameters like maximum surface excess concentration at air/water interface (Γ max ), the minimum surface area occupied by surfactant molecules (A min ) and the related thermodynamic parameters such as, standard Gibbs free energy of micellization (ΔG 0 m ), standard free energy of adsorption (ΔG 0 ad ), and free energy of surface at equilibrium ðG s min ) were also determined from the surface parameters. The aggregation behavior has been elucidated from transmission electron microscopy (TEM) and dynamic light scattering (DLS) techniques which showed that these gemini surfactants have potential self-aggregation efficiency. Besides, some other physicochemical properties like foam stability, emulsifying power, and viscosity have been determined. The structural features of [C n Im-3OH-ImC n ]Br 2 enhance their surface-active properties. These features of gemini surfactants are of primary significance from pharmaceutical and biomedical viewpoints. The gemini surfactants may have great implications in drug formulations and delivery owing to their prominent aggregation and non-cytotoxic nature.

show abstract

Section: Surface and Interfacial Studiessupporting

confidence: 75%

Surface, Micellar, and Aggregation Behavior of Non‐cytotoxic Imidazolium Gemini Surfactants

Shaheen

Mir

Arif

et al. 2020

J Surfact & Detergents

View full text Add to dashboard Cite

show abstract

“…The second reaction was directed towards the protonation of 1‐methylimidazole, with a concomitant occurrence of the linkage between the hydrophilic and hydrophobic moieties. Owing to the tunable of the imidazole ring, the 3‐positon N substitution was readily used to construct hydrophilic structure under proper conditions, especially in synthesizing hydrocarbon chain surfactants [63–67] . The temperature and the solvent were essential to adapt to different electron donors and 1‐positon substituted alkylimidazoles.…”

Section: Resultsmentioning

confidence: 99%

“…Owing to the tunable of the imidazole ring, the 3-positon N substitution was readily used to construct hydrophilic structure under proper conditions, especially in synthesizing hydrocarbon chain surfactants. [63][64][65][66][67] The temperature and the solvent were essential to adapt to different electron donors and 1-positon substituted alkylimidazoles. No solvent was recommended for the conversion of 1-methylimidazole to imidazolium without the need for complex purification.…”

Section: Discussion Of Preparation Processmentioning

confidence: 99%

Synthesis and Characterization of a Novel Imidazolium Short‐Chain Fluorocarbon Surfactant as a Potential Agent for Aqueous Film Forming Foam

Wang,

Bai,

Zhu

et al. 2023

ChemistrySelect

View full text Add to dashboard Cite

To explore novel hydrophilic groups of short‐chain fluorocarbon surfactants for aqueous film‐forming foam (AFFF), an original surfactant (S‐im) with a unique imidazolium structure was developed. The intermediate and S‐im were identified by FT‐IR and NMR, validating the mild synthesis route. MS spectrum correspondingly verified the molecular weight of S‐im (329.07). TGA analysis further revealed that S‐im showed satisfied thermal stability before 200 °C. Due to the synergism effect, equimolar S‐im/C6H13NaO3S (6.29 mmol/L) maintained a low surface tension of 17.81 mN/m. Likewise, the high surface activity of the equimolar mixture contributed to its spreading on different hydrocarbon fuels. We adjusted the mixture concentration to 20 mmol/L based on applicable standards to obtain a moderate foam expansion (9.7) and an opportune drained time (323 s). The mixture exerted a promising performance. All flames caused by investigated fuels were extinguished in 75 seconds, with burnback time exceeding 14 minutes, indicating a significant field application potential.

show abstract

“…Therefore, the implementation of a successful chemical injection requires the thermal stability of the selected surfactant over an extended period of time . Long-term stability tests must be considered in the screening of suitable surfactants, especially for high-temperature and high-salinity (HTHS) reservoirs. − …”

Section: Introductionmentioning

confidence: 99%

Long-Term Thermal Stability of Ionic Surfactants for Improving Oil Production at High-Salinity High-Temperature Conditions

Hou,

Huang,

Alotaibi

et al. 2024

ACS Omega

View full text Add to dashboard Cite

Surfactants with stable chemical structures and robust ability are required to lower interfacial tension and stabilize emulsions for successful chemical injection applications. This work selected six surfactants, dodecyl carboxylic sodium (LAS), dodecyl sulfonate dodecyl sodium (SLS), dodecyl sulfate sodium (SDS), dodecyltrimethylammonium bromide (DTAB), 3-(N,N-dimethylmyristylammonio) propanesulfonate (SB3−14) and a sulfobetaine formulation (PCT-10), and systematically investigated the ionictype effects on thermal stability at 95 °C for 150 days in highsalinity water (total dissolved solids (TDS) = 57,600 ppm). With characterizations of aged samples performed through a spinning drop tensiometer, high-performance liquid chromatography, and infrared spectroscopy, it can be seen that the long-term stability sequence of ionic surfactants in solutions is sulfobetaine ≈ quaternary ammonium > sulfonate > sulfate > carboxylate. The carboxylate possibly precipitates out from the solution in the acid form, and the sulfonate and sulfate decompositions are due to the hydrolysis of the anionic head, forming alcohol and NaHSO 3 /NaHSO 4 . Obvious decomposition of sulfobetaine and quaternary ammonium was not observed, but these molecules might suffer the elimination of the ionic head, forming the corresponding alkene and amine. The results also show that the dissolved oxygen in the solution preparation significantly sped up the degradation of sulfonates. At last, the emulsion stability tests of crude oil in surfactant solutions showed that sulfobetaine surfactants retained the highest emulsifying ability after thermal aging and thus are promising candidates for long-term chemical injection in hightemperature high-salinity reservoirs.

show abstract

Synthesis, thermal stability and surface activity of imidazolium monomeric surfactants

Cited by 23 publications

References 26 publications

Surface, Micellar, and Aggregation Behavior of Non‐cytotoxic Imidazolium Gemini Surfactants

Surface, Micellar, and Aggregation Behavior of Non‐cytotoxic Imidazolium Gemini Surfactants

Synthesis and Characterization of a Novel Imidazolium Short‐Chain Fluorocarbon Surfactant as a Potential Agent for Aqueous Film Forming Foam

Long-Term Thermal Stability of Ionic Surfactants for Improving Oil Production at High-Salinity High-Temperature Conditions

Contact Info

Product

Resources

About